Sunspot data for 23 July 2024 of period 2024Q3: (PREV DAY - NEXT DAY)
| Sun240723_1338UTC_sketch.jpg | Sun240723_1342UTC.jpg |
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 |  Click here for the sharpened image. |
Today started out fully overcast, but in the early afternoon a large clearance with about 10% cumuli appeared. Transparency in between was excellent, but the scintillation monitor reported poor seeing on average. I made the following observation:
Observation date/time: 23 July 2024 13:38 UTC Telescope: GTT60 (Galileo Type Telescope) Focal length: 1490mm (plano convex singlet) Aperture: 60mm Stop: 30mm Eyepiece: -75mm (plano concave singlet, 24mm aperture) Observation type: projection (350mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.380ms (using 82nm bandwidth green filter) Seeing (SSSMon): 4.5-5.0" (3.0" at best) =================================================================== Total number of sunspots: 34 | |
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